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Finding the Third Proportional to 3,882 and 7,212.75

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Solution

The third proportional to 3,882 and 7,212.75 is: 13,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882 : 7,212.75 = 7,212.75 : x
  2. Step 2: Convert to fraction form
    3,882/7,212.75 = 7,212.75/x
  3. Step 3: Cross multiply
    3,882x = 7,212.75 × 7,212.75
  4. Step 4: Simplify right side
    3,882x = 52,023,762.56
  5. Step 5: Solve for x
    x = 52,023,762.56/3,882
  6. Step 6: Final answer
    x = 13,401.28

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.